Improvement in safe-door hinges



J. L. HALL. Safe Door-Hinges.

Fig-1 13 ,239 PatentedFeb.25,I873.

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1.LQHALL Safe Door-Hinges N0.136,239. Patented Feb-25,1873.

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UNITED STATES PATENT OFFICE.

JOSEPH. L. HALL, OF CINOINNATI,.OHI(

IMPROVEMENT IN SAFE-DOOR HINGES.

Specification forming part of Letters Patent No. 136,239, dated February 9.5, 1873.

To all whom it may concern:

Be it known that I, JosEPH L. HALL, of Cincinnati, Hamilton county, State of Ohio, have invented a certain new and useful Improvement in Hinges, of which the following is a specification:

My invention relates to that class of hinges which enable a door to be first moved out of its recess, more or less, and then rotated on its hinges in the usual manner; and it consists in forming one leaf of the hinge with a recess in its upper edge, and placing therein a swing ing or crank-shaped pintle, that connects the two leaves and permits the other leaf with the door to which it is attached to be moved as above stated, and it further consists in providing the leaves of the hinge with bearing.- shoulders to relieve the pintle from strain, as hereinafter described.

Figures 1, 2, 3, 4, and 5 are views showing the construction of the hinge. Fig. 6 is a front view, and Fig. 7 a top view, of a door applied to a safe or vault, with my improved hinges.

It has lately become customary to construct the doors of safes and vaults with dovetailed or other shaped projections on their edges to fit into corresponding recesses in the jambs surrounding them andin order to have these parts fit snugly and to leave no cracks for the reception of wedges or explosive material, or to make the cracks as small as possible, it is desirable to have the door move straight into its seat when nearly closed, instead of swinging in on a circle, as heretofore. It is to accomplish this result that my invention is designed; and to accomplish this result I proceed as follows: I make a hinge of two leaves or parts, A and B, as represented in Figs. 1, 2, 3, and 4, the part B, which forms the upper half, being provided with a hole, h, for the reception of the pintle d. The pintle, instead of being a straight pin, as is usual, consists of two straight parts, at and d, united by a rightangled body D, as shown in Fig. 3, the whole representing an ordinary crank. The lower leaf A has a recess, 0, formed in its upper face, as shown in Fig. 4; and near the outer end of this recess I form a vertical hole, h, for the reception of the part d of the pintle. In order to prevent undue wear I fit in the bottom of the recess 0 a steel or hardened plate, F, upon which the bodyD of the pintle rests, as shown in Fig. 3. The recess 0 I make of such a depth as to permit the body D of the pintle to set therein, and have a plate, E, fitted over it and come flush with the upper surface of the leaf A, as shown in Figs. 2 and 3, the plate E being secured by a screw, K. In the side of the part d of the pintle a groove, L, is formed, and a pin, M, is inserted in a hole made through the leaf B, in such a position that the pin will fit into the groove L, and thereby fasten the pintle to the leaf A. The recess 0 I also make of such a width as to permit the body D of the pintle to move or swing laterally therein for a short distance, the part 41 being the fixed point or center of motion, around which the body I) with the upright part (1 moves in the arc of a circle; and, of course, when the leaf B is set thereon, carrying the latter with it. It will, therefore, be seen that if the leaf A be secured to the doorframe in the usual manner, and the door secured to the leaves B, the door can be first drawn straight out of its recess by this swing ing motion of the pintles, after which it can be swung around in the usual manner, the operation of course being reversed in closing the door. In Fig. 5 I have shown a modification of my hinge. In this case the inner edge of the leaf A is cut away so as to leave a shoulder, G, the edge H being made on a curve corresponding to that described by the upper leaf, while the pintle is being swung in its recess O, and the upper leaf B being provided shoulder G, thus relieving the pintle of aportion of the weight of the door. These bearing-surfaces may be case-hardened or otherwise protected from excessive wear.

It will of course be understood that the swinging movement of the pintle will be comparatively small, and that whenever it is desired to increase this movement the body D of the pintle must be made correspondingly longer, so as to prevent drawing the door edgewise to any considerable extent, as it would be otherwise caused to wedge or jam against the jamb or wall of the recess on the side next to the hinges. It will, of course, only be necessary that the pintle should swing with a projection, I, which rests upon the hifually far enough to disengage the interlocking parts of the door and its frame, as represented in Fig. 7, after which the door will swing around in the usual manner.

Having thus described my invention, what I claim is- 1. A hinge consisting of a leaf, A, having its pintle arranged to swing laterally in a recess therein, in combination with a leaf, B, arranged to move with said pintle and rotate thereon, substantially as and for the purpose set forth.

2. The leaf A, provided with the shoulder G H, in combination with a leaf, B, provided with the projection I, substantially as set forth.

JOSEPH L. HALL. Witnesses:

J NO. B. MARLING, W. A. RHODES. 

